Code 9, Open Wheel Speed Sensor Circuit
- Turn ignition off. Disconnect speed sensor connector. Measure resistance across sensor terminals. See Figure . If resistance is more than 2000 ohms, replace speed sensor.
- If resistance is 1000-2000 ohms, disconnect RWAL ECM connector. Reconnect speed sensor connector. Measure resistance between ECM terminals No. 16 and 17. If resistance is more than 2000 ohms, repair open in speed sensor wiring. If resistance is 1000-2000 ohms, replace RWAL ECM.